Effects of preparing conditions on the electro-optical properties of reverse-mode polymer-stabilized cholesteric texture films

Reverse-mode polymer-stabilized cholesteric texture (R-PSCT) films were prepared from ultraviolet polymerization-induced phase separation in a mixture of 1,4-di4-(6-acryloyloxyhexyloxy) benzoyloxy -2-methylbenzene (C6M)/(S)-4'-(2-methyl-butyl) biphenyl-4-earbonitrile (CB15)/2,2-dimethopxy-1,2-diphenyl-ethanone (IRC,651)/SLC 1717. The effects of curing temperature and ultraviolet (UV) irradiance on the electro-optical properties of R-PSCT films were studied. When the curing temperature increases or the ultraviolet irradianee decreases, the driving voltage, the contrast ratio and the on-state response time decrease, but the off-state response time increases. The R-PSCT film prepared at a curing temperature of 293 K and an ultraviolet irradiance of 0.75 mW·cm^-2 has better electro-optical properties.